diff --git a/src/components/cockpit/exceedanceLevel/components/dailyTrendChart.vue b/src/components/cockpit/exceedanceLevel/components/dailyTrendChart.vue
index cdd8fb4..6985ad4 100644
--- a/src/components/cockpit/exceedanceLevel/components/dailyTrendChart.vue
+++ b/src/components/cockpit/exceedanceLevel/components/dailyTrendChart.vue
@@ -44,18 +44,36 @@ const init = () => {
             itemStyle: { opacity: 0 }, //去圆点
             right: 70
         },
-        xAxis: {
-        type: 'time',
-        axisLabel: {
-            formatter: {
-                day: '{MM}-{dd}',
-                month: '{MM}',
-                year: '{yyyy}'
-            }
-        }
-    },
+        tooltip: {
+            trigger: 'axis',
+            formatter: (params: any) => {
+                if (!params || params.length === 0) return ''
 
-    yAxis: [{}, {}],
+                // 使用第一个项目的轴标签作为时间标题
+                let tooltipText = params[0].axisValueLabel + '<br/>'
+
+                // 遍历所有项目并累加到tooltipText中
+                params.forEach((item: any) => {
+                    // 将数值格式化为保留两位小数
+                    const formattedValue = Math.round(item.value[1] * 100) / 100
+                    tooltipText += `${item.marker} ${item.seriesName}: ${formattedValue}<br/>`
+                })
+
+                return tooltipText
+            }
+        },
+        xAxis: {
+            type: 'time',
+            axisLabel: {
+                formatter: {
+                    day: '{MM}-{dd}',
+                    month: '{MM}',
+                    year: '{yyyy}'
+                }
+            }
+        },
+
+        yAxis: [{}, {}],
         grid: {
             left: '1%',
             right: '45px',